Exterior sun visor for a truck



FIG. 1 is a perspective view of the exterior sun visor for a truck;

FIG. 2 is a front view of the exterior sun visor for a truck;

FIG. 3 is side view of the exterior sun visor for a truck, the other side being symmetrical;

FIG. 4 is a back view of the exterior sun visor for a truck;

FIG. 5 is a top view of the exterior sun visor for a truck; and,

FIG. 6 is a bottom view of the exterior sun visor for a truck.

The broken line showing of a partial automobile, in FIG. 1, is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a exterior sun visor for a truck, as shown and described. 